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Why is the shovel operator (
... This answer is based on a false premise: both allocating and freeing short-lived objects is essentially free in any halfway decent modern GC. It is at least as fast as stack allocation in C and significantly faster than malloc / free. Also, some more modern Ruby implementations will pr...
Can regular expressions be used to match nested patterns? [duplicate]
... however, you should use a push-down automaton, i.e a parser for a context-free grammar, for instance LL (top-down) or LR (bottom-up). You have to take the worse runtime behavior into account: O(n^3) vs. O(n), with n = length(input).
There are many parser generators avialable, for instance ANTLR fo...
Is there an API to get bank transaction and bank balance? [closed]
...n how apps like mint and pageonce do it. Anyone know if there is anything free to chase. I want to create an open source app. So paying for an api would not be an option
– Darren Cato
Jan 24 '12 at 16:54
...
MySQL select 10 random rows from 600K rows fast
...ery= BD_Ejecutar($sql);
list($num_records)=mysql_fetch_row($rquery);
mysql_free_result($rquery);
$sql="SELECT id FROM pages WHERE RAND()*$num_records<20
ORDER BY RAND() LIMIT 0,10";
$rquery= BD_Ejecutar($sql);
while(list($id)=mysql_fetch_row($rquery)){
if($id_in) $id_in.=",$id";
else ...
how to provide a swap function for my class?
... if you absolutely need to, or provide a member swap that is called by the free function:
// version 1
class Bar{
public:
friend void swap(Bar& lhs, Bar& rhs) {
// ....
}
};
// version 2
class Bar{
public:
void swap(Bar& other) {
// ...
}
};
void swap(Bar& l...
Getting value of select (dropdown) before change
... ddl.data('previous', ddl.val()); });
– free4ride
Jan 16 '14 at 15:12
5
...
Where do I find the current C or C++ standard documents?
...ard on Amazon
C99 Standard on Amazon
Standards committee draft versions (free)
The working drafts for future standards are often available from the committee websites:
C++ committee website
C committee website
If you want to get drafts from the current or earlier C/C++ standards, there are so...
What is the naming convention in Python for variable and function names?
...are you using, that doesn't know that underscore continues a word? Lots of free ones that do. I use Notepad++, if an IDE isn't available. For that, can download a template for python editing. (Others can recommend even more useful free downloads.)
– ToolmakerSteve
...
How to automatically generate N “distinct” colors?
...comes to the rescue
Arbitrary N
Colour displays for categorical images (free download)
A WEB SERVICE TO PERSONALISE MAP COLOURING (free download, a webservice solution should be available by next month)
An Algorithm for the Selection of High-Contrast Color Sets (the authors offer a free C++ imple...
Is there a shortcut to move between header and source file in VC++?
...
Try PhatStudio. It's free and comes with an easy installer.
ALT + S = Switch between header/source file
ALT + O = Open a file (supports instant search via typing, like the start menu in Windows Vista/7).
...